SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934
Date of Report (date of earliest event reported): November 20, 2000
Credit Suisse First Boston Mortgage Securities Corp Mortgage-Backed Pass-Through
Certificates, Series 1999-WM1
(Exact name of registrant as specified in its charter)
United States 333-53115 13-3320910
(State or Other Jurisdiction (Commission (I.R.S. Employer
of Incorporation) File Number) Identification No.)
11 Madison Avenue, 5th Floor
New York, New York 10010
(Address of Principal Executive Offices) (Zip Code)
Registrant's telephone number, including area code: (212) 325-2000
Item 5. Other Events
On November 20, 2000 a scheduled distribution was made from the Trust
to holders of the Certificates. The Trustee has caused to be filed with
the Commission, the Monthly Report dated November 20, 2000
The Monthly Report is filed pursuant to and in accordance with
(1) numerous no-action letters (2) current Commission policy
in the area.
A. Monthly Report Information
See Exhibit No.1
B. Have and deficiencies occurred? NO.
Date:
Amount:
C. Item 1: Legal Proceedings: NONE
D. Item 2: Changes in Securities: NONE
E. Item 4: Submission of Matters to a Vote of
Certificateholders: NONE
F. Item 5: Other Information - Form 10-Q, PartII - Items 1,2,4,5
if applicable: NOT APPLICABLE
Item 7. Monthly Statements and Exhibits
Exhibit No.
1.) Monthly Distribution RepoNovember 20, 2000
Washington Mutual Bank, F.A. Mortgage-Backed Pass-Through Certificates
STATEMENT TO CERTIFICATEHOLDERS
Distribution Date: November 20, 2000
DISTRIBUTION SUMMARY
Beginning Current PeriodClass Accrued
Original Current PrincipaPrincipal Pass-Through Interest
Class Face Value Amount Distribution Rate Distributed (1)
1-A-1 222151000.00 171653856.43 4991087.79 6.1894% 884600.21
1-A-2 208709000.00 208709000.00 0.00 6.1894% 1075560.02
2-A-1 257137000.00 220168073.01 3046992.90 6.0159% 1103503.78
2-A-2 147243000.00 147243000.00 0.00 6.0159% 737996.22
3-A-1 599085000.00 513209876.43 9489148.73 6.3983% 2735701.78
3-A-2 350619000.00 350619000.00 0.00 6.3983% 1868999.53
4-A-1 157510000.00 116550882.91 4626782.35 6.9449% 673314.32
4-A-2 108014000.00 108014000.00 0.00 6.9449% 625121.42
5-A-1 350000000.00 181757895.38 14161112.86 6.7288% 1018109.09
5-A-2 469803000.00 469803000.00 0.00 6.7288% 2631581.42
5-A-3 200000000.00 200000000.00 0.00 6.7288% 1121474.76
6-A-1 450000000.00 340827682.69 17025173.30 6.8674% 1950316.45
6-A-2 490357000.00 490357000.00 0.00 6.8674% 2805967.28
6-A-3 200000000.00 200000000.00 0.00 6.8674% 1144567.17
7-A 44457000.00 34438037.61 520249.31 7.6081% 218200.08
8-A 61246000.00 57372916.51 1332426.32 7.5785% 362328.72
M-1 129023000.00 127724019.81 123713.70 6.6067% 702800.48
M-2 107909000.00 106822591.74 103468.54 6.6067% 587790.53
M-3 60992000.00 60377943.59 58482.18 6.6067% 332229.19
M-4 30495000.00 30187981.87 29240.13 6.6067% 166109.15
B-1 21113000.00 20900438.15 20244.20 6.6067% 115004.51
B-2 11728000.00 11609924.60 11245.39 6.6067% 63883.52
B-3 14079705.76 13937953.82 13500.33 6.6067% 76693.49
R 200.00 0.00 0.00 7.5785% 0.00
TOTAL:4691670905.76 4182285074.55 55552868.03 23001853.12
(1) Interest Distribution includes Reimbursement of Realized Losses
Prepayment Ending
Realized LossInterest Interest Current Principal
Principal Shortfall Shortfall Amount
Class
1-A-1 0.00 0.00 767.80 166662768.64
1-A-2 0.00 0.00 933.54 208709000.00
2-A-1 0.00 0.00 247.54 217121080.11
2-A-2 0.00 0.00 165.55 147243000.00
3-A-1 0.00 0.00 684.58 503720727.70
3-A-2 0.00 0.00 467.70 350619000.00
4-A-1 0.00 0.00 1213.55 111924100.56
4-A-2 0.00 0.00 0.00 108014000.00
5-A-1 0.00 0.00 1075.37 167596782.52
5-A-2 0.00 0.00 2779.60 469803000.00
5-A-3 0.00 0.00 0.00 200000000.00
6-A-1 0.00 0.00 184.43 323802509.39
6-A-2 0.00 0.00 265.34 490357000.00
6-A-3 0.00 0.00 0.00 200000000.00
7-A 0.00 0.00 141.17 33917788.30
8-A 0.00 0.00 7.10 56040490.19
M-1 0.00 0.00 392.05 127600306.11
M-2 0.00 0.00 327.89 106719123.20
M-3 0.00 0.00 185.33 60319461.41
M-4 0.00 0.00 92.66 30158741.74
B-1 0.00 0.00 64.15 20880193.95
B-2 0.00 0.00 35.64 11598679.21
B-3 0.00 0.00 42.78 13924453.49
R 0.00 0.00 0.00 0.00
TOTAL: 0 0 10073.77 4126732207
AMOUNTS PER $1,000 UNIT
Beginning Ending
Current PrincipaPrincipal Interest Current Prin.
Class Cusip Amount Distribution Distribution Amount
1-A-1 22540ANQ7 772.69000108 22.46709576 3.98197717 750.22290532
1-A-2 22540ANR5 1000.00000000 0.00000000 5.15339549 1000.00000000
2-A-1 22540ANS3 856.22867580 11.84968674 4.29150134 844.37898906
2-A-2 22540ANT1 1000.00000000 0.00000000 5.01209715 1000.00000000
3-A-1 22540ANU8 856.65619475 15.83940297 4.56646683 840.81679177
3-A-2 2254A0NV6 1000.00000000 0.00000000 5.33057116 1000.00000000
4-A-1 22540ANW4 739.95862428 29.37453082 4.27474014 710.58409345
4-A-2 100001523 1000.00000000 0.00000000 5.78741108 1000.00000000
5-A-1 22540ANY0 519.30827251 40.46032246 2.90888311 478.84795006
5-A-2 22540ANZ7 1000.00000000 0.00000000 5.60145725 1000.00000000
5-A-3 100001524 1000.00000000 0.00000000 5.60737380 1000.00000000
6-A-1 22540APB8 757.39485042 37.83371844 4.33403656 719.56113198
6-A-2 22540APC6 1000.00000000 0.00000000 5.72229474 1000.00000000
6-A-3 10001525 1000.00000000 0.00000000 5.72283585 1000.00000000
7-A 22540APE2 774.63701127 11.70230357 4.90811526 762.93470770
8-A 22540APF9 936.76185400 21.75531986 5.91595729 915.00653414
M-1 22540APJ1 989.93218116 0.95884997 5.44709455 988.97333119
M-2 22540APK8 989.93218119 0.95884996 5.44709459 988.97333123
M-3 22540APL6 989.93218111 0.95885001 5.44709454 988.97333109
M-4 22540APM4 989.93218134 0.95884998 5.44709461 988.97333137
B-1 100001526 989.93218159 0.95885000 5.44709468 988.97333160
B-2 100001527 989.93217940 0.95884976 5.44709413 988.97332964
B-3 100001528 989.93218023 0.95885029 5.44709466 988.97332994
R-1 22540APG7 0.00000000 0.00000000 0.00000000 0.00000000
R-2 22540APH5 0.00000000 0.00000000 0.00000000 0.00000000
SIGNATURES
Pursuant to the requirements of the Securities
Exchange Act of 1934, the registrant has duly caused this
report to be signed on its behalf by the undersigned
thereunto duly authorized.
WASHINGTON MUTUAL BANK, FA
MORTGAGE-BACKED PASS-THROUGH CERTIFICATES
SERIES 1999-WM1
By: /s/ Barbara Grosse
Name: Barbara Grosse
Title: Vice President
Bank One, NA
